Chokokera mutu chozungulira chotseguka ndi mtundu wa chomangira chokhala ndi riveting yamphamvu kwambiri. Chili ndi mawonekedwe a mphamvu yayikulu, kutsiriza kwakukulu, malo owala a riveting, opanda dzimbiri, malo okhazikika komanso odalirika a riveting, malo osalala a riveting ndi zina zotero.
Ma rivets akhungu otseguka okhala ndi mutu wozungulira wotseguka muyezo wadziko lonse: GB12618.
Nthawi yotumizira: Feb-09-2022